Lutron Electronics GM-300P Operating instructions

Brand: Lutron Electronics

Model: GM-300P

Type: Operating instructions

300 g x 0.01 g

DIGITAL BALANCE

Model : GM-300P

Your purchase of this DIGITAL BALANCE marks a step forward

for you into the field of precision measurement. Although this

DIGITAL BALANCE is a complex and delicate instrument, its

durable structure developed. Please read the following

instructions carefully and always keep this manual within easy

reach.

OPERATION MANUAL

TABLE OF CONTENTS

1.FEATURES...........................................................

2.SPECIFICATIONS.................................................

3. FRONT PANEL DESCRIPTION................................3

3-1 Platform.......................................................

3-2 Level Bubble.................................................

3-3 CAL. Button ( function A Button )...................

3-4 Tare Button ( function B Button )...................

3-5 Display.........................................................

3-6 Power Switch................................................ 3

3-7 Rubber Pads.................................................

3-8 Battery Cover/Compartment...........................3

3-9 DC 9V Receptacle..........................................3

3-10 RS232 Output Socket....................................3

3-11 Unit Switch..................................................

4.PLATFORM INSTALLATION...................................

5.WEIGHT MEASURING PROCEDURE........................5

6.SELF-CALIBRATION..............................................6

7.COUNTING SCALE OPERATION PROCEDURE..........8

8.BATTERY REPLACEMENT......................................

9.DC 9V AC/DC ADAPTER OPERATION.....................

10. RS232 PC SERIAL INTERFACE.............................10

1. FEATURES

* Microprocessor circuit with hi

h accuracy & better

performance.

* 0.01

& 0.0005 oz resolution & wide measurin

capacity.

*Lar

e LCD display, 20.9 mm ( 0.8" ) di

it size, easy read out.

* Built-in

ram & oz display unit, select by the internal

slide switch.

* Built-in self calibration system, the calibration value can

memorize into EEPROM circuit permanently even power

off.

*Hi

h precision countin

scale function.

* RS-232 computer interface.

* Accept battery or AC/DC adapter power source, two way

power supply.

* Built-in " level bubble " & the ad

ustable " rubber pads ".

* Heavy duty ABS housin

plastic case.

2. SPECIFICATIONS

Display LCD, 20.9 mm ( 0.8" ) di

it size, 5 di

its

with annunciator.

Measurin

ran

Uni

Ran

Resolutio

Resolution

0.10

to 300

0.01

oz 0.005 oz to 9.9995 oz 0.0005 oz

10.000 oz to 10.582 oz 0.001 oz

Min. Display Wei

0.10

oz 0.005 oz

Unit Select

or oz, select by internal slide switch.

Accuracy ( 0.05 % + 0.04

)

Within two hours after self calibratio

be executed.

23± 5 .℃

Spec. tested under the environment R

Field Stren

th less than 3 V/M

frequency less than the 30 MHz only.

Samplin

time Approx. 1 second.

Tare Control Approx. 300

max.

Transducer Load cell.

Circuit Microprocessor circuit.

Auto Calibration Use 100

or 200

standard wei

ht to

execute self-calibration automatically.

Operatin

0 to 50 ( 32 to 122 ).℃℃℉ ℉

Temperature

Operatin

Humidity Less than 80% RH.

Size Cabinet 250 x 190 x 70 mm

Platform Round, 120 mm Dia.

Power Supply 1.5V AA (UM-3) battery x 6 PCs,

or DC 9V adapter, optional.

Power Consumption Approx. DC 17 mA.

Accessory Included Operation Manual........1 PC.

Optional * Software ( Windows version ),

accessories SW-U801-WIN, SW-E802.

* RS232 cable, UPCB-02.

* USB cable, USB-01.

* 200

calibration wei

ht, WT-200.

* AC/DC 9V power adapter, AP-9VA.

3. FRONT PANEL DESCRIPTION

Side view Bottom view

Front view Back view Fi

. 1

3-1 Platform

3-2 Level Bubble

3-3 CAL. Button ( function A Button )

3-4 Tare Button ( function B Button )

3-5 Display

3-6 Power Switch

3-7 Rubber Pads

3-8 Battery Cover/Compartment

3-9 DC 9V Receptacle

3-10 RS232 Output Socket

3-11 Unit Switch

4. PLATFORM INSTALLATION

. 2

5. MEASURING PROCEDURE

As intend to let the balance under the best operatio

condition, it recommend to warm up the balance at leas

30 minutes before make the operation.

1) Place the balance on a flat hard surface.

ust the " Rubber Pad " ( 3-7, Fi

. 1 ) until the water

bubble of the " Level Bubble " ( 3-2, Fi

. 1 ) on the center

position, then the scale already install under the

horizontal position completely.

2) Set the "

" or "oz" unit by slide the " Unit Switch "( 3-11, Fi

. 1 ).

* The scale are set to the "

" unit typically.

* Use the "-" type screw driver to slide the " Unit Switch ".

* Slide the " Unit Switch " to the ri

ht position will set t

ram " unit & the ri

ht down corner of LCD will show th

" marker.

* Slide the " Unit Switch " to the left position will set t

" oz " unit.

3) Turn the " Power Switch " ( 3-6, Fi

. 1 ) to the " On " position.

1 = On, 0 = Of

The " Display " ( 3-5, Fi

. 1 ) will show " 8.8.8.8.8 " for a few

seconds, then " 0 " value ( 0.00

for

ram function, 0.0000

for oz function ) will be present.

4) Apply the load to the platform

ently, display will show

the measurin

wei

ht values.

* Do not exceed the over load capacity of the scale.

* Over wei

htin

, the display will show " - - - - - ".

5) Tare function :

After wei

htin

the first item, press " Tare Button " ( 3-4,

. 1 ), scale will reset to zero values automatically.

At the same time, the LCD display will show the " TARE "

mark. Place next wei

hted item onto scale. Scale will

ive wei

hts of the second only.

Consideration of tare functio

If the display show minus wei

ht or show "_ _ _ _ _

means the display readin

is under the zero, the

tare function should be executed.

Before measurin

the wei

ht, If the display is no

zero & show some value, it means the internal circui

is over the zero, then tare function should b

executed.

he max. tare capacity is approx. 300

he " Tare " marker will disappear until power of

and power on a

ain.

6. SELF-CALIBRATION

1) Please prepare the followin

optional " Standard Wei

ht " :

200

ram standard wei

ht (WT-200, optional).

100

ram standard wei

ht.

2) Calibration under the 200

ram standard wei

a) Power on the scale until the display show zero value.

Apply the 200

ram standard wei

ht to the center of the

platform

ently. If the scale is not accurate, then may

show the wei

ht value around 200

( for example 199.93

, 200.06

.....)

Step 1 :

Press the " CAL. Button " ( 3-3, Fi

. 1 ) once,

display will show the value of " 100.00

Step 2 :

Followin

press the " Tare Button " ( 3-4, Fi

. 1 ) once,

display will show the value of " 200.00

Step 3 :

Press the " CAL. Button " ( 3-3, Fi

. 1 ) once a

ain,

display value of " 200.00

" will flash 6 times, then the

calibration procedures are finished completely & balance

is ready for the measurement accurately.

3) Calibration under the 100

ram standard wei

a) Power on the scale until the display show zero value.

Apply the 100

ram standard to the center of the

platform

ently. If the scale is not accurate, then may

show the wei

ht value around 100

( for example 99.94

, 100.05

.....)

Step 1 :

Press the " CAL. Button " ( 3-3, Fi

. 1 ) once,

display will show the value of " 100.00

Step 2 :

Press the " CAL Button " ( 3-3, Fi

. 1 ) once a

ain,

display value of " 100.00

" will flash 6 times, then the

calibration procedures are finished completely & balance

is ready for the measurement accurately.

Consideration of Self-Calibration

he internal Self-Calibration value is saved to th

internal EEPROM circuit permanently. Once power off the

power on, the calibration value will be not disappeared .

* After make the self calibration, measure the 100

or 200

standard wei

ht a

ain, if the display value existin

few

counts deviation, it is normal. However within few hours,

the balance will be kept under a hi

h accuracy condition.

hose accuracy will be even better than the published

specification ( refer pa

e 2 ).

* Under the status of " oz " unit, still can use the wei

ht o

100

or 200

to make the calibration. However the "

marker will disappear.

7. COUNTING SCALE OPERATION

PROCEDURE

1) Prepare a lot of countin

sample units. The no. o

countin

sample will be 10 PCs, 20 PCs, 50 PCs or 100

PCs.

The more PCs of countin

sample will be better.

No load to put on the platform.

2) Use the fin

er to hold the " CAL. Button ( function

Button ) " ( 3-3, Fi

. 1 ), at the same time set the

" Power Switch " ( 3-6, Fi

. 1 ) to the " On " position.

Until one beeper sound is present, then release the

fin

er away from " function A Button ".

3) a. The bottom left corner of LCD will show the

" COUNT " marker, at the same time the LCD will

show no. of sample units from 10, 20, 50, 100 in

sequence & chan

ed per second.

b. Put the countin

sample units ( For example 10 PCs,

20 PCs, 50 PCs or 100 PCs ) on the platform.

c. Until the display reach the no. of sample units

exactly, for example " 50 ", push the " function

Button " ( 3-3, Fi

. 1 ) once a while. The display

will flash twice and freeze the sample countin

no.,

then take away the sample units. Now the

balance is ready for countin

Chan

e to the new countin

sample units

Under the countin

version if intend to chan

e the

countin

sample units, the new procedures are followin

a. Take away any load from the platform.

b. Push the " function A Button " ( 3-3, Fi

. 1 ) once a

while. LCD will show no. of sample units from 10, 20,

50, 100 in sequence & chan

ed per second.

c. Put the countin

sample units ( For example 10 PCs,

20 PCs, 50 PCs or 100 PCs ) on the platform. Until the

display reach the no. of sample units exactly, for

example " 50 ", push the " function A Button " ( 3-3,

. 1 ) once a while a

ain. The display will flash

twice and freeze the set countin

no., then take away

the sample units. Now the balance is ready for countin

& the sample countin

units already chan

e to new

value.

Consideration

Under the countin

function, 1 PC wei

should lar

e than 0.50

, other wise the resul

of countin

no. may existin

some error.

The accuracy for the " countin

no. " result ar

always depend on the no. of " sample units " tha

key in. We stron

recommend that it can tak

more sample units as possible, for example 5

PCs or more, then will

et the best accuracy.

4) a. Take away the counting sample units away from

the platform, then put the new lot of units that

intend to be counted on the platform.

b. The display will show the countin

no. of the new

" sample units ".

8. BATTERY REPLACEMENT

If battery is weak, LCD display will show " LO " indicator.

Every 1 second the " LO " indicator will flash one time.

This reminds user to replace new battery.

1) Open " Battery Cover " ( 3-8, Fi

. 1 ) located at the bottom

of the scale.

2) Accordin

to the device instruction, place batteries ( 1.5V

AA size battery x 6 PCs ) into the battery compartment

replace the battery cover.

AC/DC

ADAPTER

OPERATION

(Adapter is optional accessory)

1) The scale will also be operated by the household ACV

power source (110/220/240 ACV) with a DC 9V

Adapter ( capacity 300 mA).

2) Plug the jack from the Adapter into the " DC 9V

receptacle " ( 3-9, Fig. 1 ).

3) Now the scale is ready for ACV operation.

RS232

SERIAL

INTERFACE

The instrument features an RS232 output via 3.5 mm

Terminal ( 3-10, Fi

. 1).

The connector output is a 16 di

it data stream which can be

utilized to the user's specific application.

An RS232 lead with the followin

connection will

be required to link the instrument with the PC

serial input.

Scale PC

(3.5 mm jack plug) (9W 'D" Connector)

Center Pin........................................ Pin 4

Ground/shield......................................Pin 2

2.2 K

resistor

Pin 5

The 16 di

it data stream will be displayed in the followin

format :

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Each di

it indicate the followin

status :

D15 Start Word

D14 4

D13 1

D12, D11 Annunciator for Display

= 57

oz = 58

count = 30

D10 Polarity

0 = Positive 1 = Ne

ative

D9 Decimal Point(DP), position from ri

ht to the left

0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP

D8 to D1 Display readin

, D1 = LSD, D8 = MSD

For example :

If the display readin

is 1234, then D8 to D1 is :

0000123

D0 End Word

RS232 FORMAT : 9600, N, 8, 1

Baud rate 9600

Parity No parity

Data bit no. 8 Data bits

Stop bit 1 Stop bit

1109-GM300P

Lutron Electronics GM-300P Operating instructions

Brand: Lutron Electronics

Model: GM-300P

Type: Operating instructions

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Lutron Electronics GM-300P Operating instructions

Lutron Electronics GM-300P Operating instructions

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